Patents by Inventor Diamantis D. Preonas

Diamantis D. Preonas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rotary drive apparatus having one member with smooth outer peripheral surface
    Patent number: 5105672
    Abstract: Rotary drive apparatus includes first member journaled for rotation coupled by a cable to a second member also journaled for rotation, and at least one outer peripheral surface, on which the cable winds and unwinds, includes a smooth outer periphery. One of the rotatable members is the driving member, and the other rotatable member is the driven member.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: April 21, 1992
    Inventors: Donald G. Carson, Diamantis D. Preonas